Belt-gearing



Unirse STATES y PATENT Ormes.

JAMES T. BAGGS, OF BRIDGEFORT, OHIO.

BELT-GEARING.

EPECIFICATION forming nari; of Letters Patent No. 310,359, dated January 6, 1885 A pplication tiled October :'19, 15S-l. (No model.)

\ zen of the United States, residing at Bridge view of the center.

port, in the county of Belmont and Slate of Ohio, have inventedcertain new and useful Improvements in Belt-Gearing; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it ap pertains to make and use the same, reference being had to the accompanying drawings, and to the letters and iigures of relerencemarked thereon, which form a part of this specifica; tion.

My invention relates to belt-gearing, and has i'or its object 'to provide simple means by which the belt may be conveniently loosened when it is shifted onto the loose pulley.

lThe invention consists, broadly, in journal` ing the loose pulley on an adjustable center, as will be hereinafter more fully described and claimed.

In the drawings, Figure l is a side view of my improvement; Fig. 2, a plan view, partially in section. Fig. 3 is a sectional View on line o: a', Fig. 2. Fig. et is a detached View of the center on the shaft. Fig. 5 is a detail end Fig. G is a detail of the rack. Fig. 7 represents a modification of the operating mechanism.

In the use of drive-belts experience has demonstrated that they become inferior and have less capacity of pulling from being constantly stretched, both while on the loose and the keyed pulley, and belts, as a rule, are ad justed onto the loose pulley a great part of the time-nights, Sundays, 85e. Therefore, ordinarily, they are stretched a large part of the time and soon become worthless. To obviate this it is the custom in some shops to throw the belts off the pulleys when work is over. rIhis, however, is inconvenient, and necessitates the replacement of the belts on the pulleys when work is resumed, involving pulley A. rIhe center I3 is of cylindrical shape, and is journaled eccentrically on the shalt A, alongside the pulley A. I prefer to provide this center with a cavity or mortise, B', extended longitudinally from one end, and communicating by perforations b b with the bearing on shaft A, and with the outer side of the center. I-n use I design tosupply this cavity with a proper lubricant, which will pass through openings Z) b and oil the shaft A and the loose pulley, as will be understood from Figs. 3, 5, and 6. The loose pulley G isjournaled on the eccentric, the latter forming a center for same. Then the center is turned ,with its farthest point from its center of moj usted or how it is held in its several positions,

as suoli results may be secured in various ways, as will be manifest. I prefer, however, in practice to employ the handle D, which may be formed integral with or be secured in snitable manner to the eccentric. Vhen the eccentric is formed with a cavity, as B', I prefer to provide the handle with a ring,D,tted against the end of the eccentric and closing said cavity, and secure it in such position by screw -studs d, projected from the eccentric through the ring D and secured by nuts d', as will be understood from Figs. 2 and 4. The handle may be held in either of its positions by springracks E E, supported on the bearing-frame E. The racks E or handle D may be made ot' spring metal or otherwise, so as to permit their adjustment int'o and out of engagement. I employ this arrangement in cases where the line-shaft is arranged near or under the floor. In cases where the line shaft is arranged near the ceiling I pivot to the handle a depending arm, F, arranged to engage a rack, as will be seen in Fig. 6.

It will be appreciated that my invention is IOO Y and brought in contact with the ruiming pulleys by a slight incline formed on the outer end of sleeve Wedging against a fixed impediment or hanger--as, l'orexainple, the thread or incline of a screw coming in contact with a fixed nut-or by any other equivalent method of producing friction between the pulleys, f

thereby imparting motion to the dead or loose pulley. The advantage would be to prevent the stretching and bruising ofthe edges of the belts in starting heavy niachines.

Having thus described 1nyinvention,what Iv claim, and desire to secure by Letters Pat-ent, 1s-

l. The combination of the shaft, the center journaled eccentrically thereon, and the pulley journaled on the said eccentric-center, substantially as and for the purposes specified.

2. The combination of the shaft, the center journaled eccentrically thereon and provided with a cavity, B, having outlet-ports b b', and the pulley journaled on the center, substantially as set forth.

3. The combination cf the bearing frame provided with racks E, the shaft, the eccentric-ccnter, the pulley journaled thereon, and the handle secured to the eccentric, substantiall y as set forth.

In testimony whereof I alix my signature in presence of two witnesses.

JA MES T. BAGGS.

Vitncsscs:

GEO. B. Pasco` OscAR MABERY. 

